Delay Timer (Vehicles with 4WD)
To delay the re--engagement of the 4WD differential
clutch when shifting, the 4WD engage circuit includes a
one second delay timer. On some early production ve-
hicles, the delay timer is located near the differential
electrical connector. On most vehicles, the delay timer
is located behind the dash panel (Fig. 38).
4
1
Testing
1.
2.
3.
differential relay to click as it energizes followed a sec-
ond later by the differential delay relay to click as it ener-
gizes. The one second delay indicates that the delay
timer is working correctly.
Turn ignition switch to ON (do not start the engine).
Press the clutch pedal in to disengage the clutch.
Release the clutch pedal and listen carefully for the
3
2
Figure 38
1.
2.
Dash (hood removed)
Delay timer
3.
4.
Differential relay
Differential delay relay
4.
Turn ignition switch OFF after testing is completed.
High Flow Hydraulics Kit Switch (Vehicles with High Flow Hydraulics Kit)
On vehicles equipped with the high flow hydraulics kit,
1
the switch to engage the high flow hydraulic circuit is
mounted on the dash (Fig. 39). When the high flow hy-
draulics kit switch is ON, the solenoid coil on the control
manifold is energized to allow hydraulic flow to the at-
tachment.Anindicatorlightontheswitchidentifieswhen
the switch is ON.
Testing
1.
parking brake and remove key from ignition switch.
Park machine on a level surface, stop engine, apply
2
2.
electrical connector from the switch.
Locate switch on dash and disconnect wire harness
Figure 39
1.
Dash
2.
High flow switch
3.
With the use of a multimeter (ohms setting), the
switch functions may be tested to determine whether
continuity exists between the various terminals for each
switch position. The switch terminals are marked as
shown in Figure 40. The circuitry of this switch is shown
in the chart below. Verify continuity between switch ter-
minals for each switch position.
SWITCH
POSITION
NORMAL
CIRCUITS
OTHER
CIRCUITS
BACK OF SWITCH
ON
2 + 3
2 + 1
5 + 6
5 + 4
Figure 40
OFF
4.
Aftertesting,connectwireharnesselectricalconnec-
tor to the switch.
Electrical System
Page 8 -- 26
Workman HD Series
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